hash_include.cpp

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/***************************************************************************
 *   Copyright (C) 2007-2013 Mike Kinghan, imk@burroingroingjoing.com      *
 *   All rights reserved.                                                  *
 *                                                                         *
 *   Contributed originally by Mike Kinghan, imk@burroingroingjoing.com    *
 *                                                                         *
 *   Redistribution and use in source and binary forms, with or without    *
 *   modification, are permitted provided that the following conditions    *
 *   are met:                                                              *
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 *   Redistributions of source code must retain the above copyright        *
 *   notice, this list of conditions and the following disclaimer.         *
 *                                                                         *
 *   Redistributions in binary form must reproduce the above copyright     *
 *   notice, this list of conditions and the following disclaimer in the   *
 *   documentation and/or other materials provided with the distribution.  *
 *                                                                         *
 *   Neither the name of Mike Kinghan nor the names of its contributors    *
 *   may be used to endorse or promote products derived from this software *
 *   without specific prior written permission.                            *
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 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS   *
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 **************************************************************************/
#include "hash_include.h"
#include "diagnostic.h"
#include "citable.h"
#include "options.h"
#include "io.h"
#include "canonical.h"
#include "reference.h"
#include <iostream>

using namespace std;

bool hash_include::valid() const
{
        string fn = filename();
        size_t len = fn.length();
        bool valid = len > 2U && len == fn.length();
        if (valid) {
                valid = ((fn[0] == '<' && fn[len -1] == '>') ||
                         (fn[0] == '\"' && fn[len - 1] == '\"'));
        }
        return valid;
}

string hash_include::read(chewer<parse_buffer> & chew)
{
        string arg;
        if (identifier::is_start_char(*chew)) {
                string id = identifier::read(chew);
                symbol::locator sloc(id);
                _ref.reset(new reference(sloc,chew));
                arg = _ref->invocation();
        } else {
                size_t startoff = size_t(chew);
                size_t endoff = size_t(chew(header_name));
                if (startoff < endoff) {
                        chew.cursor(startoff);
                        arg = citable(chew,endoff - startoff);
                } else {
                        arg = canonical<string>(chew);
                }
        }
        return arg;
}

void hash_include::report()
{
        if (!line_despatch::cur_line().reportable() ||
                        options::get_command() == CMD_SYMBOLS) {
                return;
        }
        shared_ptr<reference> ref = symbolic_argument();
        if (_directive.reported()) {
                if (ref && ref->callee()->configured() && !ref->reported()) {
                        _directive.set_reported(false);
                }
        }
        if (_directive.reported() && options::list_only_once()) {
                return;
        }
        if ((options::list_local_includes() == options::list_system_includes()) ||
            (options::list_local_includes() && local_header()) ||
            (options::list_system_includes() && system_header())) {
                cout << "#include ";
                if (ref) {
                        cout << _directive.argument() << ": symbolic argument, ";
                        if (ref->callee()->configured()) {
                                if (ref->callee()->self_referential()) {
                                        cout << "insoluble, because of circular definitions";
                                } else {
                                        cout << "expands as >>" << filename() << "<<";
                                }
                        } else {
                                cout << "insoluble, because unconfigured";
                        }

                } else {
                        cout << filename();
                }
                if (options::list_location()) {
                        cout << ": " << io::in_file_name()
                        << '(' << line_despatch::cur_line().num() << ')';
                }
                cout << '\n';
                _directive.set_reported();
        }
}

/* EOF */